data_2003194 _journal_name_full 'Acta Crystallographica' _journal_volume C51 _journal_year 1995 _journal_page_first 183 _journal_page_last 185 _publ_section_title ; Strontium Dibromide Hexahydrate ; loop_ _publ_author_name 'Isaac Abrahams' 'Elke Vordemvenne' _chemical_formula_moiety ? _chemical_formula_sum 'H12 Br2 O6 Sr' _chemical_formula_structural 'Sr Br2 , 6H2 O' _chemical_formula_analytical ? _chemical_formula_weight 355.54 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-y, x-y, z' '-x+y, -x, z' 'x, 1+y, -z' '-x, -x+y, -z' 'x-y, -y, -z' _symmetry_space_group_name_H-M 'P 3 2 1' _cell_length_a 8.204(3) _cell_length_b 8.204(3) _cell_length_c 4.1590(10) _cell_angle_alpha 90.00 _cell_angle_beta 90.00 _cell_angle_gamma 120.00 _cell_volume 242.42(14) _cell_formula_units_Z 1 _exptl_crystal_density_diffrn 2.435 _exptl_crystal_density_meas ? _exptl_crystal_density_method ? _diffrn_radiation_type MoK\a _diffrn_radiation_wavelength 0.71069 _cell_measurement_reflns_used 25 _cell_measurement_theta_min 10 _cell_measurement_theta_max 14 _exptl_absorpt_coefficient_mu 13.779 _cell_measurement_temperature 291(2) _exptl_crystal_description prism _exptl_crystal_size_max 0.40 _exptl_crystal_size_mid 0.13 _exptl_crystal_size_min 0.13 _exptl_crystal_colour white _refine_ls_shift/esd_max 0.530 _refine_diff_density_max 0.478 _refine_diff_density_min -1.318 _refine_ls_extinction_method none _refine_ls_extinction_coef ? loop_ _atom_type_symbol _atom_type_description _atom_type_scat_source _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag 'Sr' 'Sr' 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' -1.5307 3. 'Br' 'Br' 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' -0.2901 2. 'H' 'H' 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 0.0000 0.000 'O' 'O' 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 0.0106 0.006 _refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881 _refine_ls_abs_structure_Flack -0.04(6) loop_ _atom_site_label _atom_site_occupancy _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Sr 1 0.0000 0.0000 0.0000 0.0191(3) Br 1 0.3333 0.6667 -0.4405(2) 0.0330(4) O1 1 0.7874(8) 0.0000 0.5000 0.0282(14) O2 1 0.3112(9) 0.0000 0.0000 0.034(2) H1 1 0.0727(121) 0.3903(124) -0.1601(197) 0.024(20) H2 1 0.3152(140) 0.2360(158) 0.4588(329) 0.079(49) loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_22 _atom_site_aniso_U_23 _atom_site_aniso_U_33 Sr 0.0200(4) 0.0100(2) 0.000 0.0200(4) 0.000 0.0174(5) Br 0.0282(4) 0.0141(2) 0.000 0.0282(4) 0.000 0.0427(8) O1 0.018(2) 0.012(2) 0.0020(15) 0.024(3) 0.004(3) 0.044(4) O2 0.027(3) 0.019(2) -0.003(2) 0.037(4) -0.006(4) 0.042(4)